Notes & Productivity

Siyuan is a self-hosted knowledge management platform designed for private note-taking and information organization. It functions as a local-first application that stores all user content as plain text files on the local file system, ensuring data ownership and offline availability. The platform utilizes a block-based document model, which structures information as a tree of independent content blocks to facilitate granular manipulation and bidirectional linking. Users can extend the core functionality through a sandboxed plugin architecture, allowing for the development of custom themes and scripts that modify the editor behavior and user interface to suit specific workflows. The software is built as a containerized application, supporting deployment within isolated environments to standardize dependencies and simplify maintenance across various hosting infrastructures. It maintains consistency across multiple devices through a persistent socket connection that propagates state changes in real time, while the interface utilizes virtual document object model reconciliation to manage updates efficiently.

Notable is a local-first markdown note-taking application designed for managing personal knowledge bases. It functions as a document management system that stores all notes and attachments as plain text files directly on the local disk, ensuring data ownership and compatibility with external file-system tools. The application prioritizes a keyboard-centric workflow, utilizing a command-palette-driven interface to facilitate rapid navigation and content manipulation. It provides a distraction-free writing environment that allows users to hide interface elements, helping to maintain focus while composing structured documents. The platform supports advanced content management through hierarchical tagging, which allows for nested categorization of information. Users can perform batch operations on multiple items simultaneously, such as tagging or organizing large libraries, and utilize a side-by-side editor to view live previews of formatted markdown, including mathematical expressions, diagrams, and syntax-highlighted code blocks.

Zettlr is an academic markdown editor and research note management tool designed for professional writing and knowledge organization. It functions as a document processor that enables users to draft, structure, and manage research projects within a unified workspace. The application distinguishes itself by integrating a Zettelkasten-based knowledge management system, allowing users to link related research concepts and notes to foster discovery. It utilizes a local-file-system persistence model, ensuring that all data remains under user control and portable across different environments. The platform supports complex academic workflows by incorporating structured metadata and a modular conversion pipeline. This allows for the transformation of markdown files into various standardized publication formats, facilitating the preparation of documents for academic submission and professional publishing. The software is distributed as a cross-platform desktop application, providing a native interface for managing large collections of literature notes and source materials.

Foam is a personal knowledge management system that organizes information into a navigable web of interconnected markdown files. It functions as a knowledge graph tool, utilizing wiki-style bidirectional linking and metadata to track relationships between documents and concepts. By storing data in standard text files, the system ensures long-term portability and compatibility with external tools. The platform distinguishes itself through its integrated visualization and automation capabilities. It generates graphical maps of file connections to help users identify patterns and discover relationships within their data. Additionally, it provides a command-line interface for administrative tasks such as searching, linting, and managing document structures, allowing for efficient maintenance of a growing library. The system supports a comprehensive documentation workflow by incorporating template-driven generation to ensure consistent formatting across all entries. It also includes a static site export pipeline, which transforms local collections of linked markdown files into structured websites for public or private sharing. These features collectively enable users to capture, organize, and publish research or personal notes within a unified environment.

Memos is a self-hosted, container-native knowledge management platform designed for capturing and organizing personal notes. It functions as a private workspace where users can create content using markdown, tags, and media embeds to streamline daily productivity. The system is built to be deployed as a portable service, allowing individuals to maintain full control over their data and hosting environment. Beyond its core note-taking capabilities, the platform operates as a headless content service that exposes a structured RESTful API. This interface allows for programmatic interaction, enabling users to automate tasks, synchronize information with external tools, and build custom clients. The system supports secure authentication through personal access tokens and provides event-driven webhook integration to trigger external workflows whenever content is created or modified. The application is designed for flexible production environments, supporting multiple relational database backends and configuration via environment variables. It includes administrative tools for managing user roles, instance settings, and data backups, ensuring that the platform can be tailored to specific organizational or personal requirements. The service is optimized for deployment through container runtimes, with built-in support for reverse proxy configurations to handle secure traffic and public link generation.

Note-gen is an artificial intelligence-assisted note-taking application and knowledge management tool designed for local-first data ownership. It functions as a workspace that leverages language models to organize, summarize, and synthesize personal notes into structured documents while maintaining offline accessibility. The platform distinguishes itself through a multimodal workflow orchestrator that chains sequences of tasks to process text, images, and external data. By integrating vision-language models, it extracts information from visual inputs like screenshots and documents, converting them into structured text. Users can further extend these capabilities by connecting third-party artificial intelligence services and external search tools to ground generated content in their own local knowledge base. The system supports a variety of data management and retrieval methods, including vector-based semantic search to locate information based on intent rather than keywords. It maintains consistency across distributed environments by synchronizing files through remote storage providers such as version control systems or cloud storage.

Logseq is a privacy-focused, local-first knowledge base designed for personal information management and networked thought mapping. It functions as a bi-directional graph editor that organizes content into hierarchical, outliner-based structures, allowing users to connect related concepts through automated backlinking and visual relationship mapping. The platform distinguishes itself by maintaining all user data in plain text markdown files stored directly on the local device, ensuring offline availability and long-term portability. It employs a logic-based query engine to perform complex relational searches across the graph of notes and metadata, while a content-addressable storage model ensures data integrity for every information block. The application supports a broad range of information management tasks, including academic research synthesis and structured project documentation. Users can extend the core functionality through a sandboxed plugin system that allows for custom interface components and data manipulation. The software is documented through a dedicated resource library to assist with setup and configuration.

Trilium is a local-first personal knowledge management system designed to store and organize information on a user's own device. It functions as a hierarchical knowledge base where every note acts as both a standalone document and a container for nested children, allowing for complex information relationships and deep categorization. The platform distinguishes itself through a component-based interface that dynamically renders diverse content types, including rich text, diagrams, and executable scripts. All data is persisted within a single relational database file, which supports a versioned archive and a soft-delete lifecycle to protect information integrity. This architecture enables users to manage large volumes of interconnected data within a unified, extensible workspace. The system provides a comprehensive environment for digital asset organization, combining document management with scriptable automation. It utilizes a combination of server-side rendering and client-side orchestration to maintain a responsive interface for navigating and searching through structured information.

Xournalpp is a digital note-taking and annotation application designed for capturing natural handwriting and sketching. It functions as a vector graphics editor that treats individual strokes, shapes, and text as discrete, editable objects, allowing users to refine and manipulate their work after it has been placed on the canvas. The application provides a specialized environment for overlaying handwritten notes and drawings onto existing PDF documents. By utilizing pressure-sensitive stylus input, it simulates a natural writing experience, while its layered canvas composition enables users to manage complex annotations without altering the underlying source file. The software supports a range of document markup and illustration tasks, including the ability to save and retrieve project states through structured XML-based serialization. It is designed to handle input through an event-driven system that ensures responsive rendering of strokes across a variety of academic and creative workflows.

Notesnook is a cross-platform note-taking application designed for private knowledge management. It functions as a secure personal information manager that prioritizes user data confidentiality by employing client-side end-to-end encryption for all stored notes, attachments, and metadata. By utilizing a local-first synchronization model, the application ensures that information remains accessible offline while maintaining a consistent state across desktop and mobile devices. The platform distinguishes itself through a focus on privacy-centric organization and secure information handling. Users can structure complex knowledge bases using nested notebooks, tags, and bidirectional linking, all while keeping their data protected from unauthorized access via local application locks and multi-factor authentication. For external collaboration, the system provides password-protected sharing, ensuring that sensitive content remains encrypted and restricted to authorized recipients. Beyond core note-taking, the environment includes a component-based rich editor that supports tables, formulas, and media, alongside tools for capturing and archiving web content. The application also integrates task management features, allowing users to schedule reminders and track objectives directly within their notes. To support data sovereignty, the platform offers comprehensive import and export capabilities, enabling users to migrate data from other services or create local backups to prevent vendor lock-in. The software is available as native packages for major desktop and mobile operating systems, providing a consistent interface that can be customized to suit individual workflows.

Rnote is a vector-based note-taking and drawing application designed for capturing handwritten input. It functions as a digital workspace that records stylus pressure and movement to create sketches and notes, storing them as mathematical paths rather than pixels to allow for infinite scaling and non-destructive editing. The application provides a flexible canvas environment that supports infinite scrolling and various page layouts. Users can organize their work using a layer-based system, which allows for the independent manipulation and ordering of individual strokes, shapes, and background assets. The interface includes a tabbed workspace for managing multiple open documents simultaneously. Beyond its core drawing capabilities, the software supports the import and export of external files in standard formats. It is available as a cross-platform tool for creating and refining vector-based graphics and handwritten content.

Marktext is a cross-platform desktop application designed for markdown document authoring and structured note-taking. It functions as a WYSIWYG text processor, providing a distraction-free interface that renders formatted content in real-time while hiding the underlying markup syntax. The application utilizes a multi-process architecture that separates system integration from the user interface, ensuring consistent performance across Windows, macOS, and Linux. By employing a custom editor core built on native browser capabilities and a structured syntax tree, it manages complex document elements such as mathematical expressions, diagrams, and code blocks. The software includes a plugin-based extension system that allows for the injection of custom functionality and interface components. It is distributed as an open-source project, maintaining a consistent environment for technical documentation and personal knowledge management.

Khoj is a self-hosted artificial intelligence platform designed for personal knowledge management and semantic information retrieval. It functions as a private assistant that indexes your local documents, notes, and external workspaces, allowing you to interact with your data through natural language queries and conversational chat. By maintaining a local-first architecture, the system ensures that your information remains under your control while providing context-aware responses grounded in your personal knowledge base. The platform distinguishes itself through a modular, cross-platform integration layer that embeds intelligent search and chat capabilities directly into your existing workflows. Whether you are working within text editors, web browsers, or mobile messaging applications, Khoj provides a unified interface to your data. It supports advanced retrieval strategies, such as dual-model architectures for semantic mapping and real-time internet grounding, which allow the assistant to synthesize private notes with external information while providing clear source citations. Beyond its core retrieval capabilities, the system offers a comprehensive suite of tools for data orchestration and research automation. It includes a pluggable ingestion pipeline for diverse file formats, automated query scheduling, and the ability to execute code or generate visual content directly within the chat interface. Users can configure custom agents, manage model routing, and secure their deployments with multi-user authentication, making it suitable for both individual use and enterprise-grade environments.

Omnivore is an open-source, self-hostable read-it-later application designed to centralize web articles, newsletters, and digital documents into a personal library. It functions as a comprehensive content archiver that captures web pages and stores them locally, ensuring permanent access and readability regardless of internet connectivity. The platform distinguishes itself through an event-sourced synchronization engine that maintains a consistent state across multiple devices by replaying user actions. It utilizes a headless web scraping service to extract clean text and metadata from raw web pages, providing a uniform reading experience. Users can manage their collections through a research-oriented workflow that supports highlighting passages and attaching personal notes to saved content. The application provides a full suite of content management capabilities, including offline reading, cross-device progress synchronization, and structured data persistence. It is distributed as an open-source project, allowing users to maintain full control over their personal data and reading history.